English
insectual
From insect + -ual.
Formed from insect + -ual
Proto-Indo-European *sek- ‘to cut’
…
Latin īnsecō ‘to cut into, to cut up’
Latin īnsectus ‘cut into, cut up, with a notched or divided body’
Latin īnsectum
Middle French insecte
English insect
Today it means
adj Of, relating to, or characteristic of an insect.
Language periods are conventional ranges, not dates for this word.
Etymograph / insectual